Finding the Fourth Proportional to 2,931.76, 4,399.38 and 1,084.18

Step by Step Solution

1. Step 1: Write the proportion equation
   2,931.76 : 4,399.38 = 1,084.18 : x
2. Step 2: Convert to fraction form
   2,931.76/4,399.38 = 1,084.18/x
3. Step 3: Cross multiply
   2,931.76x = 4,399.38 × 1,084.18
4. Step 4: Simplify right side
   2,931.76x = 4,769,719.81
5. Step 5: Solve for x
   x = 4,769,719.81/2,931.76
6. Step 6: Final answer
   x = 1,626.91